Structure and magnetotransport properties of epitaxial nanocomposite La{sub 0.67}Ca{sub 0.33}MnO{sub 3}:SrTiO{sub 3} thin films grown by a chemical solution approach.
- Materials Science Division
Epitaxial La{sub 0.67}Ca{sub 0.33}MnO{sub 3}:SrTiO{sub 3} (LCMO:STO) composite thin films have been grown on single crystal LaAlO{sub 3}(001) substrates by a cost effective polymer-assisted deposition method. Both x-ray diffraction and high-resolution transmission electron microscopy confirm the growth of epitaxial films with an epitaxial relationship between the films and the substrates as (002){sub film}||(002){sub sub} and [202]{sub film}||[202]{sub sub}. The transport property measurement shows that the STO phase significantly increases the resistivity and enhances the magnetoresistance (MR) effect of LCMO and moves the metal-insulator transition to lower temperatures. For example, the MR values measured at magnetic fields of 0 and 3 T are {approx}44.6% at 255 K for LCMO, {approx}94.2% at 125 K for LCMO:3% STO, and {approx}99.4% at 100 K for LCMO:5% STO, respectively.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1042580
- Report Number(s):
- ANL/MSD/JA-73532; APPLAB; TRN: US201212%%855
- Journal Information:
- Applied Physics Letters, Vol. 100, Issue 8; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Transport properties of microstructured ultrathin films of La{sub 0.67}Ca{sub 0.33}MnO{sub 3} on SrTiO{sub 3}
Low-field magnetoresistance anisotropy in strained ultrathin Pr{sub 0.67}Sr{sub 0.33}MnO{sub 3} films